A manhunt for Australia's most wanted fugitive has been scaled back, five weeks after two police officers were gunned down at a rural property.

More than 200 police remain in the Victorian high country searching for Dezi Freeman after he allegedly killed Neal Thompson and Vadim de Waart-Hottart as they carried at a search warrant at his home in Porepunkah.

The 56-year-old has been on the run since, fleeing into dense bushland from the mountainous town about 300km northeast of Melbourne.

Despite no confirmed sighting of the trained bush survivalist since the shooting, Victoria Police commissioner Mike Bush said authorities were determined to find him.

Officers, including specialist teams from interstate and abroad, have searched more than 40 square kilometres of land by foot and air in

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